Potassium permanganate is prepared from the mineral pyrolusite, MnO_(2). Its crystals have deep purple colour. It acts as an oxidizing agent in the neutral, alkaline as well as acidicmedium. In acidicmedium , it is used in volumetric analysis for estimationof ferrous salts, oxalates etc. The titrations are carried out in presence of H_(2)SO_(4). However ,before using itas a titrant, it is first standized with standard oxalic acid solution or Mohr salt solution. In one of the experiments on titration , 13.4 g of dry pure sodium oxalate ( molar mass =134 g mol^(-1) ) was dissolvedin 100mLof distilled water and then 100 mL of 2MH_(2)SO_(4) were added. The solution, was cooled to 25.30^(@) C. Now to this solution , 0.1 M KMnO_(4) solution was added till a very faint pink colour persisted. The purple colour of KMnO_(4)is due to

Potassium permanganate is prepared from the mineral pyrolusite, MnO_(2

1.	Potassium permanganate is prepared from the mineral pyrolusite, MnO_(2). Its crystals have deep purple colour. It acts as an oxidizing agent in the neutral, alkaline as well as acidicmedium. In acidicmedium , it is used in volumetric analysis for estimationof ferrous salts, oxalates etc. The titrations are carried out in presence of H_(2)SO_(4). However ,before using itas a titrant, it is first standized with standard oxalic acid solution or Mohr salt solution. In one of the experiments on titration , 13.4 g of dry pure sodium oxalate ( molar mass =134 g mol^(-1) ) was dissolvedin 100mLof distilled water and then 100 mL of 2MH_(2)SO_(4) were added. The solution, was cooled to 25.30^(@) C. Now to this solution , 0.1 M KMnO_(4) solution was added till a very faint pink colour persisted. The purple colour of KMnO_(4)is due to
Answer» incompleted-subhsell ionic nature of `KMnO_(4)` ionic nature of `KMnO_(4)` resonance in `MnO_(4)^(-)`ion Solution :Purple COLOUROF `MnO_(4)^(-)` ion is DUE to chargetransfer